Just got an old tatty avon dingy....it needs fixing urgently/badly can anyone advise me on what material it is so as i get the correct patches.... I have a serial number if that helps anyone..its avb 894 59B 090...thank u in advance

If its an EA16 rescue boat then cahnces are it could be an old RNLI D-class.
Material should be hypalon so is easy enough to work with, you'll need somewhere warm and dry to do it though. I think from the serial number your boat is a 1990.
Some photos of it would be good?